Lubricating device for pulleys



Patented .lz-in. 2, lfrlli.

. were dirle.

maiis niivin scniiiliz, er HAMILTON, lanic.

nmsnrcrirrne nnvion non ruimiirs.

To all fio/wm t may concern/f f i a Be itlrnown that l, DAVID taorriiiii, a citizen of the United States, residing at Hamil.- f

ten, in the county oi" Butler and State et Ohio, have invented certain new and useitul improvements in Lubricating Devices fior Pulleys; and l do hereby declare the rollovving to be a oit the invention, such as Will enable others skilled in the vart to which it appertains to make and use the same. n

rlhe present invention relates to improvements in lubricating devices for pulleys and the like, and has ioran objectto provide a device adapted to receive a supply of lubricant and hold it in reserve so that it may :feed automaticallyto the hub andsha-t or' the pulley during the rotation of lthe latter.

Another object oi the present invention resides in providing an improved lubricating attachment for is provided with a supply chamber or axial bore' therein so arranged with respect to a lubricant receiving opening that oil, grease or other like material may be red into the barrel irrespective of the angular position ot the pulley about its4 shaft.v n y A further object of the invention resides in providing a simple and inexpensive attachment for pulleys in which the lubricant Will be eectively i'ed to the bearings A still further Objectis to provide means ifor retaining the lubricant in the hub and on the shaft during. high speed revolutionsoi the pulley, so that there is no danger oi injury to the bearing parts at such high rate of speed.

With the foregoing andother objects in vievv, the invention Will be "more fully described hereinafter, and Will be more particularly pointed out in the claims appended hereto. y

ln the drawings, wherein like symbols reiter to like or corresponding p arts throu out the several views,

Fig. 1 is a partial side View or' a pulley shown equipped With an improved attachment according to the invention;

Fig. 2 is a sectionalview talren on the line 2-2 in Fig. l;

Fig. `3 is a cross sectional view taken on the line 3-3 in Fig. l; y

Fig. 4 is a detail, partly in section, of the hub valve and operating means therefor,

Fig. 5 is a transverse section through the full, clear, and exact description pulleys in which abarrel l vmay be slid into place through `give access'trein end to valve stem en the line 5-5 of Fig. 4., and f looking tolvvard :the gvalv'e; 'Y

Fig. 6 is a rragnientary sectional View sheiving a slight modification; and, i

Fig. 7 isa transverse section similar to f Fig. 3, showing a slight modification.

ylleterring more particularly to the drawing, l designates the riin oi a pulley of Which 2 areftlie spokes and the hub. rlhe shaft upon which the hub 3 is mounted is indicated stel, the hub being provided with a radially disposed passage 5 through Which lubricant may be admitted to the hub and about the shaft. ln accordance-Witlrthe invention a barrel 6 is made to extend radially between the hub' 3 and rim l and is made liollouT vlfrem end to end to provide a radial chamber Zv in which lubricant may be held. `For instance, yas shown in Figs. l and2, the inner end ot the barrel may bereduced and threaded into the passage 5 in the hub 3, and

4 an opening 8 made in the rim l. g n y Alternately, asshown vinFig, a separate socket-shaped piece 9 `may bey directly threaded into the passagek 5 in` thehub 3, While theinner end oit the barrel is thread- `ed into the soclret piece 9. i An opening 10 is made 'through the sideoi' the barrel dat any suitablepoint. The opening is preferably fan shaped, asy indicated in Fig. 3, to readily receive thelubricant.

)A sleeve ll is movably mounted, upon the exterior-surface er the barrel 6, and the barrel d at its lower portion and about the openingy l0 is preferably reduced kand provided with the threads lQ-te receive internal threads andr the sleeve ll. rlhe `sleeve may bethus turned. andk shifted along the barrel G toward and 'from the 'opening l0. 1 In Fig. 2 the sleevell is shownl 'as 'shifted inl Wardly to expose the opening l() for the admission ci lubricant; While in Figs. l and 6 the sleeve ll is shown to be closed and tits f against a sheulderli provided by the diilerential diameters oit the barrel. The upper end of the barrel is normally closed by l threaded plug let which may be removed to end of the barrel for purposesot cleaning. As shown in Fig. 6 the barrel may bev or a slightly wider iorm having a bore of increased diameter to hold a greater supply of lubricant.

`When the nilley is turned at a high rate of speed there is a tendency, under centrifugal action, for the lubricant to flow outo the hub 3 and back into the tube 6. To prevent this7 a valve i5 is employed and is preferably of dislr form, and may be of rubber or other suitable material, Thevalve l5 is located the inner end of the tube (i and is adapted to close against the saine to shut oit' the outward loiv of the lubrieant. The disk valve l5 preferably has shallow notches or cut-outs 16 in its periphery to permit the free'passage or oil'into the hub vwhen the valve is hperl.

To insure closing oi the valve l5 when `the pulley rear-hes a rate of high speed, the valve lhas a vaive stern i7 which extends veoa'xially through the tube 6 and carries a weight i8 on its outer end. rilhe weight i8 is adapted to move outwardly by centrifugal force and vdraw the valve l5 into closed position, and alsov is adapted when the pulley stops and the tube 6 is elevated to move the valve l5 into open position.

W ith a device this character when the pulley steps inthe position indicated in F ig. l the sleeve` ll may be turnedv and lubricant introduced into the opening l0. The lubricant -will fall down by gravity into the lower portion oi the bore 7 of the barrel and will provide an ample amount of lubricant for a predetermined time. pulley stops with the barrel 6 at the lower portion thereof, the supply oit lubricant Will enter the outer Yportion of the barrel, and it is immaterial 4at 'what Ipoint in its rotation the pulley stops. y

lf desired, the sleeve l1 may have an opening' 19 formed in one side thereof so tl upon rotation, the openings l() of the barrel andlf-l the sleeve may be brought into registry one with the other for introducing a lubricant to the interior of the barrel 6. To close the barrel it is therefore only necessary to give the sleeve il a half turn for disposingw the openings out of line with each other.

With a device of this lrind the sleeve 1l is leasily run up and down the threaded portion l12 and may be tightened against the shoulder 1 3 so as not to become accidentally loosened during the rotation of the pulley,

Vilhen, however, the l Which might permit the escape of lubricant. The sleeve ll may be run to an open position quickly and a supply or lubricant readily loaded into the barrel, after which the sleeve il is returned to closed position and the rotation or the pulley may be continued.

Furthermore, the oil or other lubricant is maintained in the hub 3 by the valve 15 when the pulley is rotated or driven at a high rate of speed, and there cannot be the danger of running dry of the pulley under such conditions.

The device is 'ailiplicable tov pulleys of present construction by the mere insertion of the device as a Whole tln'ough theopening 8 in the rim l ther-eci.

it is obvious that various changes an@ n'iodications may be made in the details of construction and design of the above spe-` cically described embodiment of this invention Without dep'artin from the spirit thereof, such changes and modifications being restricted only by the scope ot the following claims. i v llVhat is claimed is:

l. A lubricating' device for pulleys coinp'rising an elongated barrel having a bore extending axially thereo0 from end to end and being situated between the hub and the rim orn the pulley, said barrel having connection with the pulley shaft at its inner `end and being provided with an opening intermediate the ends ot' the barrel, and a sleeve movable longitudinally on :the barrel 'for u'iaslring the opening, substantially as described.

1575, lubricating device for pulleys comprisingfa hollow barrel adapted to be placed between the hub and rim of apulley and provided With an opening intermediate its ends, said barrel beingv threaded adjacent the opening and to one side thereof, a ysleeve threaded'on the barrelY and adapted to move axially therealong into and out of masking engagement 'with the opening', and a removable plug' in the outer end ot' the barrely accessible through the rimof the pulley, substantially as described. f

nimm) sonAnK. 

